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Finding the Fourth Proportional to 436.70, 603.02 and 319.34

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Solution

The fourth proportional to 436.70, 603.02 and 319.34 is: 440.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.70 : 603.02 = 319.34 : x
  2. Step 2: Convert to fraction form
    436.70/603.02 = 319.34/x
  3. Step 3: Cross multiply
    436.70x = 603.02 × 319.34
  4. Step 4: Simplify right side
    436.70x = 192,568.41
  5. Step 5: Solve for x
    x = 192,568.41/436.70
  6. Step 6: Final answer
    x = 440.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.